Payback Period Calculator (Simple & Discounted)
Free online payback period calculator. Enter an initial investment and yearly cash flows to compute simple and discounted payback period with a cumulative cash flow table and years+months readout. 100% client-side.
Loading tool...
What is Payback Period Calculator (Simple & Discounted)?
The payback period is a capital-budgeting metric that measures how long it takes for the cash inflows of an investment to recover its initial cost. This free online payback period calculator computes both the simple payback period and the discounted payback period — the latter discounts each cash flow at your required rate of return to respect the time value of money. Enter your upfront investment and the expected net cash flows for each year to instantly see when the project breaks even, supported by a transparent year-by-year table of discount factors and cumulative balances. Everything runs 100% client-side in your browser.
Key Benefits
- Fast, intuitive risk gauge: shorter payback means less time with capital at risk
- Discounted mode fixes the classic flaw of ignoring the time value of money
- Years-and-months readout plus a cumulative table pinpoints the exact break-even point
- A perfect first screen before deeper NPV or IRR analysis on competing projects
- Private and offline-capable; no financial data leaves your device
Common Use Cases
- •Screening small-business equipment or renovation investments for cash recovery speed
- •Comparing competing projects when liquidity and capital constraints matter
- •Setting internal hurdle expectations before running full NPV/IRR analysis
- •Teaching capital budgeting with a transparent cumulative cash flow table
- •Evaluating energy-saving upgrades (solar panels, insulation) against utility savings
How to Calculate the Payback Period
- Enter the initial investment: Type the upfront cost (Year 0 outflow) of the project or asset.
- Choose simple or discounted mode: Simple payback uses raw cash flows; discounted payback first discounts each flow at your required rate of return.
- Set the discount rate and cash flows: Enter the annual rate and the expected net cash inflow for each year. Add years as needed.
- Read the payback result: The result shows the payback period in years, an exact years-and-months readout, and the cumulative cash flow table that pinpoints the break-even year.
Key Features
- Simple payback and discounted payback with a one-click mode switch
- Dynamic cash-flow rows for projects of any duration
- Year-by-year table with discount factors and cumulative balances
- Years + months readout for precise break-even timing
- Copy a full calculation summary for reports and spreadsheets